NEW! Science Diet Canine Senior Small Bites for dogs 7 years of age and up, provides optimal nutrition to help maintain a healthy, active lifestyle with age. Enriched with Glucosamine and Chondroitin Sulfate, this unique formula actually promotes your dog's natural ability to maintain joint cartilage and mobility. Plus the smaller kibble makes it easier for your dog to chew. Now with the superior antioxidant formula of the HEALTHY DEFENSE SYSTEM, it's the best choice for supporting a strong immune system and defending against the risk of disease in older dogs.